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E. Connections to public waters. Excavations where the intended purpose is connection to a public water, such as boat slips, canals, lagoons, and harbors, must be controlled by local shoreland controls. Permission for excavations may be given only after the commissioner has approved the proposed connection to pUblic waters. 5.4 Placement and Design of Roads, Driveways, and Parking Areas. 5.41 Public and private roads and parking areas must be designed to take advantage of natural vegetation and topography to achieve __.___.!._._____ ___...__...__1............ ~................... ........! __.... ~_...._...... ........1..-.,..! __ ...._.....-..__ ,....__"11...___......_.1....: __ _...._.... TI1ètX.LffiUm !:i{.;L-t:!t:!I1J.ny L'c-U!II V.Lt::JW LL"U!!! fJu'u.l..l.(,,; WGtI.ot:!L~. J.lUI,.;Io..IJllt::!JJl.oa~~uu JUIo..IÞl.. be provided by a qualified individual that all roads and parking areas are designed and constructed to minimize and control erosion to pUblic waters consistent with the field office technical guides of the local soil and water conservation district, or other applicable technical materials. 5.42 Roads, driveways, and parking areas must meet structure setbacks and must not be placed within bluff and shore impact zones, when other reasonable and feasible placement alternatives exist. If no alternatives exist, they may be placed within these areas, and must be designed to minimize adverse impacts. 5.43 Public and private watercraft access ramps, approach roads, and access-related parking areas may be placed within shore impact zones provided the vegetative screening and erosion control conditions of this subpart are met. For private facilities, the grading and filling provisions of section 5.32 of this ordinance must be met. 5.5 stormwater Management. The following general and specific standards shall apply: 5.51 General Standards: A. When possible, existing natural drainageways, wetlands, and vegetated soil surfaces must be used to convey, store, filter, and retain stormwater runoff before discharge to pUblic waters. B. Development must be planned and conducted in a manner that will minimize the extent of disturbed areas, runoff velocities, erosion potential, and reduce and delay runoff volumes. Disturbed areas must be stabilized and protected as soon as possible and facilities or methods used to retain sediment on the site. C. When development density, topographic features, and soil and vegetation conditions are not sufficient to adequately handle stormwater runoff using natural features and vegetation, various types of constructed facilities such as diversions, settling basins, skimming devices, dikes, waterways, and ponds may be used. Preference must be given to designs using surface drainage, vegetation, and infiltration rather than buried pipes and man-made materials and facilities. (')'1